Safety gas-valve.



. PATENTBD AUG. 23, 1904.

P. L. SALBMI. v SAFETY GAS VALVE.'

' APPLICATION P ILED HAB. 7. 1904.y N0 MODEL.

ATTORNEYS Patented August 23, 1904.

PATENT p OFFICE.

PAOLO LUIGI SALEMI, OF NEI/V YORK, N. Y.

SAFETY GAS-VALVE.

SPECIFICATION forming part of Letters Patent No. 768,485, dated August 23, 1904.

Application'led March 7, 1904.

To all whom t 11i/ay concern:

Be it known that I, PAOLO LUIGI SALEML'a citizen of the United States, and a resident of the city of New York. (Long Island Oity, borough of Queens,) in the county of Queens and State of New York, have invented a new and Improved Safety Gas-Valve, of which the following is a full, clear, and exact description.

My invention relates to safety gas-valves, and admits of general service, but is pecul iarly applicable for domestic use on ordinary gas-jets where there is more or less liability of the gas-jets being tampered with accidentally by unauthorized persons or by children.

My invention is intended to allow the gasjet to be opened at will, but not opened so readily as to become dangerous. In other words. I seek to render it impossible for the jet to be opened except by a person who understands it and who desires to open it.

My invention further contemplates the use of a lock for maintaining the Vjet closed eX- cept when itis desirable that the jet be opened.

Reference is to behad to the accompanying drawings, forming a part of this speciiication, in which similar characters of reference indicate corresponding parts in all the figures.

Figure 1 is a side elevation showing my invention in use, certain parts being broken away. Fig. 2 is a fragmentary View similar to thel lower portionof Fig. 1 and showing certain parts occupyinga dierent position than in saidigure, and Fig. 3 is asection upon the line 3 3 of Fig. 1 looking in the direction of the'arrow.

The nozzle is shown at 4 and is mounted upon a comparatively solid globe v5, integrally connected with the hollow casing 6, which is secured upon the gas-pipe 7. Mounted within the hollow casing 6 is a revoluble plug 8, and partially circumscribing this plug is a leaf-spring 9, provided with a projecting boss 9a and an oppositely-projecting boss 11. A screw 10 secures this spring upon the hollow casing 6. The hollow casing 6 is provided with a notch 12, which receives the boss 9a. Integrally connected with the revoluble plug 8 is a thumb-piece 13, whereby said plug may be rotated. A tubular member 14 is inte- Serial No. 196,923. (No model.)

grally mounted upon the thumb-piece 13 and is closed by an annular plug 15, as shown more particularly in Fig. 2. A push-rod 16 passes through the plug 15 and is provided with a collar 17, which engages the spiral spring 18 on the push-rod 16. By forcing the rod inwardly, as indicated in Fig.v 2, the leaf-spring 9 is pressed toward the hollow casing 6. or slot 12, but nevertheless has a certain play within the` same, as will be seen by comparing Figs. 1 and The normal position of the valve when closed `is shown in Fig. 1. rPhe normal posiltion of the leaf-spring9 is such that the boss 9 is in the path of a stop 19 on the plug 8', so that the thumb-piece 13 cannot be turned in such a direction as to cause the plug 8 to rotate.- If, however, it be desired t0 rotate the plug 8 for the purpose of allowing the gas to flow through the ports 20'21 22, (see dotted lines in Fig. 3,) the push-rod 16 is forced inwardly,'so as to press the spring 9 intoldie position indicated in Fig. 2,'the push-rodeing held in this position while the thumbpiece 13 is rotated a quarter of a turn to the left or in a so-called Lcontra-clockwise direction. The push-rod 16 simply moves relatively to the spring' 9 and casing 6, the end of the rod gliding smoothly over the spring and missing the limiting-stop 1.1, as will be seen by inspecting Fig. 3. vThe quarter-turn being complete. the bossf19 upon the revoluble plug 8`lodges against the boss 11 upon the leaf-spring 9, thereby preventing further rotation ot' the plug 8. In this position the gas may now How freely through the valve. In order to cut off the gas, the thumb-piece 13 is grasped and turned in a :so-'called clockwise direction,being thus rotated a quarter of a turn and restored to its original position, as indicated in Fig. 1. A limiting-stop 23 on the casing 6 is engaged by the boss 19 and prevents excessive rotation, thereby insuring that -the ports will be in proper position to cut off the supply of gas.

I do not limit myself'to any particularv use for my invention. While I preferably employ it in connection with gas-fixtures, it

The boss QLnever leaves the notch may obviously be ol' service in manii'mlating liquids and all other substances capable ol l llowing.

l'l aving thus described my invention, 1 claim as new and. desire to secure by Letters Patent A 1. ln a safety gas-valve, the combination of a hollow member, a revoluble plugl mounted therein, a spring connected with said hollow member and provided with a portion serving as a limiting-stop, a revoluble plug provided with a member for engaging said portion thus serving' as a limiting-stop, and a spring-controlled push member for moving said spring relatively to said plug so as to remove the same from the path of said member.

2. A safety gas-valve, comprising a easing provided with a notch, a leatspring ot' substentially U shape secured at one of its ends upon said easing and provided at its other end with a portion extending into said notch, said leaf-spring being further provided with a boss serving as a. limiting-stop, the normal posil tion of said spring being sueh that said portion projecting into sald slot 1s partially withdrawn therefrom, a revoluble plug provided with a boss for engaging said last-mentioned portion which serves as :i limiting-stop therelor, a thumb-piece rigidly colmected with said revolnble plug l'or turning the same,v a tubular member connected with said revoluble plug, a pnsh-rod disposed within said tubular member for engaging' said spring, and means` for tensioning said push-rod.

3. ln a safety gas-valve, the combination oll a easing provided with a notch, a member movable relatively to said casing and provided with a boss for entering said notch, and a revolnble plug provided with a member for engaging` said boss and also provided with a plunger movable at will lor engaging said member, thereby l'oreing said boss inl'o said notch.

In testimony whereotI l have signed my name to this specilication in the presence of two subscribing witnesses.

PAOLO LUI( I SALEM l \Vitnesses:

SALVA'roR n Vi 'r EL LA rd l, Josnrn CoLLn'nri. 

